Sig Sauer MPX K | 9mm | 4.5" | Folding Brace | 35rd Pistol

The Sig Sauer MPX K redefines sub-caliber PCC performance. Built on a short-stroke gas piston system, the MPX K delivers ultra-smooth recoil, extreme reliability, and supreme control in a compact package. Designed to meet the stringent demands of tactical professionals and elite shooter enthusiast platforms, this 9mm subcompact pistol offers unrivaled speed, modularity, and operational accuracy.

Equipped with a PCB folding brace, the MPX K provides a compact footprint for discreet storage and rapid deployment while retaining maximum stability. Featuring an M-LOK handguard, a flat-face Timney single-stage match trigger, and fully ambidextrous controls, the MPX K is ready for home defense, competition, or tactical rangework right out of the box.

Key Features & Capabilities

• Gas Piston System: Operating on Sig’s proprietary short-stroke gas piston system, the MPX K runs cleaner, cooler, and cleaner when shooting suppressed compared to traditional direct-blowback PCCs.

• Match-Grade Trigger: Comes factory-equipped with a crisp, ultra-responsive flat-blade Timney single-stage trigger engineered specifically for the MPX platform.

• Fully Ambidextrous Controls: Dual-sided bolt release, magazine release, safety selector, and charging handle ensure seamless operation for left- and right-handed shooters.

• M-LOK Free-Float Rail: Easily mount weapon lights, lasers, hand stops, and accessories on the lightweight aluminum handguard.

• Folding Pistol Brace: Features a side-folding PCB (Pivot Contour Brace) that minimizes total footprint without compromising stability.

• Optics-Ready Rail: Full-length monolithic top Picatinny rail allows effortless mounting of red dots, magnifiers, and backup iron sights.